Visio SmartShapes Symbols That Always Scale
How then, do we create a SmartShape symbol that always scales? There are several things that you could do to work around the range-of-eight to ensure that symbols always scale. Firstly, and most expediently, you could simply guard the height and width formulas because the range-of-eight affects only those cells. However, if you do opt for this route, be aware that the user will not be able to change the symbol in either height or width in her diagram.
It might be better to design the symbols in a scale that is least likely to trigger the “range-of-eight” anti-scaling. Design the symbol in a scale that falls in the center of the two most likely extremes.
If SR equals Scale Range, your symbol should be ...
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